.sidebar-nav ul {
	position: relative;
	cursor: pointer;
    left: 12px;
}

.sidebar-nav li {
	position: relative;
	margin: 0;
	cursor: pointer;
}

.sidebar-nav .folder {
    font-weight: bold;
}

.sidebar-nav ul:not(.app-sub-sidebar)>li:not(.file):before {
	position: absolute;
	top: 11px;
	left: -12px;
	display: block;
	width: 6px;
	height: 6px;
	border-right: 1px solid #505d6b;
	border-bottom: 1px solid #505d6b;
	content: "";
	transition: transform .1s;
	transform: rotate(-45deg)
}

.sidebar-nav ul:not(.app-sub-sidebar)>li.open:before {
	transform: rotate(45deg)
}

.sidebar-nav ul:not(.app-sub-sidebar)>li.collapse:before {
	transform: rotate(-45deg)
}